I realize that often people ask what size condom to wear, and you can never actually know until you try a few. This weekend I need to use a condom to have sex for the first time. I went with magnums Large I think. My size is roughly 8.5 x 5.5 (6 at the base). Does this seem close? The last thing I want is to take out a large condom and not have enough dick to hold it on.